Finding the Fourth Proportional to 122,043.09, 168,437.13 and 68,331.57
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Solution
The fourth proportional to 122,043.09, 168,437.13 and 68,331.57 is: 94,307.45
Step by Step Solution
- Step 1: Write the proportion equation
122,043.09 : 168,437.13 = 68,331.57 : x - Step 2: Convert to fraction form
122,043.09/168,437.13 = 68,331.57/x - Step 3: Cross multiply
122,043.09x = 168,437.13 × 68,331.57 - Step 4: Simplify right side
122,043.09x = 11,509,572,651.31 - Step 5: Solve for x
x = 11,509,572,651.31/122,043.09 - Step 6: Final answer
x = 94,307.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.